package com.zyl.javabasic.集合;

import java.util.ArrayList;
import java.util.Collections;
import java.util.concurrent.ConcurrentHashMap;

/**
 * @author zyl
 * @description
 * @since 2025/6/30
 */
public class List {
    public static void main(String[] args) {

        Collections.synchronizedList(new ArrayList<>());

        ConcurrentHashMap concurrentHashMap = new ConcurrentHashMap();

    }
}
